I had 20 vials of sculptra in my butt, but to be honest I barely notice the difference

I had 20 vials of sculptra in my butt, but to be honest I barely notice the difference. Another clinic told me that they may have used not the real sculptra product since the cost ($8000 for 20 vials) was too cheap. I'm not sure if the product was legit or not, but I'm sure I did not get the result promised.
The people at the clinic were nice and the doctor too.